In “Rooms”, replace “When a Room is added, the Narrator may set the values of any of the Room’s qualities as part of adding the Room.” (or “Regardless of how the name is chosen, the Narrator may set the values of any of the Room’s qualities as part of adding the Room.”, whichever of those strings exists) with:-

When a Room is added, the Narrator may optionally add Lightbulb, Unlit Lightbulb or Moonlight as a light source for it, may optionally add a defined Malfeasance as its Malfeasance, and may optionally set its Circuit Breaker to “On”.

In “Items”, replace “Once per turn, up to three Items may be added to any Rooms by the Narrator, as a Supernatural Action.” with:-

Once per turn, up to three Items defined by subrules of this rule may be added to any Rooms by the Narrator, as a Supernatural Action.